The past tense of the verb 'shake', which means to move quickly from side to side or up and down.
Shook can make people think of being surprised, scared, or very cold.
Examples:
She shook the present and heard something inside.
The earthquake shook the ground.
The dog shook its wet fur all over the floor.
I shook the box and it made a funny noise!
The giant's steps shook the whole mountain.
The thunder shook the whole house.